Trucks being running great for 28 days now with out any CEL. We were finally able to compete a camping trip with out any issues. We just got back from a 500 mile camping trip pulling our 4,000 lb camper. Still worried about going on the 1,400 mile trip we leave on Sunday.
I took the truck to a different service center 30 miles away. They diagnosed and fixed it in one day. The MAP sensor connector wasn't locked and was lose. This was replaced in September when all the issues started. Drove the truck home 30 miles and no CEL. Crossing my fingers and hoping this is it.
Well the truck didn't last long. We went camping and came back early. 50 miles into trip check engine light, lighting bolt and message "service electronic throttle control" came on. After we got to the campground stopped at Advanced Auto to have the codes read. Only one code P0105 has something...
I called today at 5:30pm and the dealer said they just finished up and the truck was ready. About time it's been 31 days| They replaced the fuel quantity solenoid which is another name for the FCA. This was your diagnosis was with out even seeing the truck and only a few hours after posting...
I texted the dealer and asked if they had checked the lift system (Fuel) or the CP4/FCA and no reply. It's been over 4 weeks and they say their still testing and diagnosing.
The codes were for low pressure in the fuel system. They replaced the fuel rails and PCM per FCA recommendation. Now they are getting both low and high pressure codes.
2015 1500 Ram ecodiesel the CEL came on last September at 25,000 miles. The dealer replaced the turbo charger. After only 20 miles CEL back on. They took it back and kept for a week and couldn't find any thing. After 20 miles the CEL came back on. They replaced the sensor and the truck was fine...